Inhibition of copper corrosion in acidic pickling solutions by N-phenyl-1,4-phenylenediamine
SCIE
SCOPUS
- Title
- Inhibition of copper corrosion in acidic pickling solutions by N-phenyl-1,4-phenylenediamine
- Authors
- Sherif, EM; Park, SM
- Date Issued
- 2006-06-05
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- Inhibition of copper corrosion by N-phenyl-1,4-phenylenediamine(NPPD) has been investigated in de-aerated, aerated, and oxygenated aqueous 0.50 M HCl solutions by using potentiodynamic polarization, potentiostatic current-time, electrochemical impedance spectroscopy, and weight-loss measurements, along with scanning electron microscopic (SEM) and energy dispersive X-ray (EDX) experiments. Potentiodynamic polarization measurements showed that the NPPD molecules significantly decrease cathodic, anodic, and corrosion currents in all these solutions. Potentiostatic current-time measurements as well as SEM and EDX investigations of the copper surface revealed that NPPD suppresses the copper dissolution current due to its adsorption on the copper surface as a Cu(I)-NPPD complex. Impedance measurements also supported the results obtained from both the potentiodynamic and potentiostatic experiments. The inhibition efficiencies measured from polarization, electrochemical impedance spectroscopy (EIS), and weight-loss experiments are all internally consistent with each other. These results together showed that NPPD is a good mixed-type inhibitor for copper corrosion in all solutions studied. (c) 2006 Elsevier Ltd. All rights reserved.
- Keywords
- copper; acidic pickling solutions; N-phenyl-1,4-phenylenediamine; corrosion inhibition; IN-SITU STM; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; SODIUM-CHLORIDE SOLUTIONS; ANODIC-DISSOLUTION; ALKALINE-SOLUTIONS; HYDROCHLORIC-ACID; IRON ELECTRODES; SULFURIC-ACID; ZINC ELECTRODEPOSITION; HETEROCYCLIC-COMPOUNDS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23943
- DOI
- 10.1016/j.electacta.2006.01.007
- ISSN
- 0013-4686
- Article Type
- Article
- Citation
- ELECTROCHIMICA ACTA, vol. 51, no. 22, page. 4665 - 4673, 2006-06-05
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